钢管拱吊装施工控制研究

Study on Construction Control of Steel Tubular Arch Hoisting

秭归青干河大桥主桥系跨度 2 5 6 .0 m中承式钢管砼桁架无铰拱桥 ,钢管拱吊装采用缆索吊机斜拉扣挂悬臂拼装法施工。通过工程实例 ,介绍秭归青干河大桥钢管拱吊装施工独特的施工方案与新型的施工控制方法及接头辅助临时连接、整体节段同时一次焊接合龙等施工新技术的应用及探讨。

Qinggan River bridge in Zigui is a CFST arch half through bridge with a main span of 256.0 m, the steel tubular arch was fastened and connected by cableway crane with cable stayed cantilever. Based on the case, this paper introduces the particular construction schema and new construction control method of suspending placement of the steel tubular. It also introduces some new construction technologies such as the temporary connection of adapters and the closing up of the whole articulations through welding.